tagged.hh revision 2810 
1/*
2 * Copyright (c) 2005 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Ron Dreslinski
29 */
30
31/**
32 * @file
33 * Describes a tagged prefetcher based on template policies.
34 */
35
36#ifndef __MEM_CACHE_PREFETCH_TAGGED_PREFETCHER_HH__
37#define __MEM_CACHE_PREFETCH_TAGGED_PREFETCHER_HH__
38
39#include "mem/cache/prefetch/prefetcher.hh"
40
41/**
42 * A template-policy based cache. The behavior of the cache can be altered by
43 * supplying different template policies. TagStore handles all tag and data
44 * storage @sa TagStore. Buffering handles all misses and writes/writebacks
45 * @sa MissQueue. Coherence handles all coherence policy details @sa
46 * UniCoherence, SimpleMultiCoherence.
47 */
48template <class TagStore, class Buffering>
49class TaggedPrefetcher : public Prefetcher<TagStore, Buffering>
50{
51  protected:
52
53    Buffering* mq;
54    TagStore* tags;
55
56    Tick latency;
57    int degree;
58
59  public:
60
61    TaggedPrefetcher(int size, bool pageStop, bool serialSquash,
62                     bool cacheCheckPush, bool onlyData,
63                     Tick latency, int degree);
64
65    ~TaggedPrefetcher() {}
66
67    void calculatePrefetch(Packet * &pkt, std::list<Addr> &addresses,
68                           std::list<Tick> &delays);
69};
70
71#endif // __MEM_CACHE_PREFETCH_TAGGED_PREFETCHER_HH__
72